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Webster 1913 Edition
Disunion
Dis-un′ion
,Noun.
 [Pref. 
dis- 
+ union
: cf. F. désunion
.] 1. 
The termination of union; separation; disjunction; 
as, the 
. disunion 
of the body and the soul2. 
A breach of concord and its effect; alienation. 
Such a 
disunion 
between the two houses as might much clou[GREEK] the happiness of this kingdom. Clarendon.
3. 
The termination or disruption of the union of the States forming the United States. 
I have not accustomed myself to hang over the precipice of 
disunion
. D. Webster.
Webster 1828 Edition
Disunion
DISUNION
,Noun.